Setts



gleitet gratis .getint @fitter J. AUGUSTUS LYNCH -AD REU-BEN KfHUNTOON,OF BOSTON, MASSACHU- i SETTS.

Letters .Patent No. 82,332, dated' September 22, 1868.

IMPROVEMENT IN GOVEENORS POR STEAM-ENGINES TO ALL PERSONS TO WHOM THESEPRESENTS MAY COME;

Be it known that we, J. AUGUSTUS LYNCH and Riemann K. HUxTooN, ofBoston, in the countyof Suffolk.

and State of Massachusettsfha've made a new and useful invention havingreference to'Governors for Steam Engines; and we do hereby` declare thesame to be fully described in the following specication and representedin the accompanying drawings, of .whichi Figure 1 denotes a. top view,

.Figure 2 afront elevation, and

Figure 3ra longitudinal section of' a governor provided with ourinvention.

Figure 4 is a vertical section of its relaj'7 or reinforcer or smallauxiiiary steam-engine, for'operating th throttle or valve of theinduction-pipe of the uiain engine.

` Figure 5 is a horizontal section of ,the relay-cylinder, itssteam-valve and chest. v

Figure 6 is'a vertical and longitudinal section of the mechanisrn'which,in conjunction with the rela'ycngine, is employed .for effecting thestoppage of the main engine or the closing of the throt.tlevalve of theinduction-pipe thereof, in case of the breakageof the belt used fordriving or revolving the actuating-pulley of Vthe. propeller of thegovernor. l

The said governor, to which oir present invention is represented asapplied, is, in its essential elements,

substantially like that described in Letters Patent, No. 71,015, datedNovember 19, A'. D. 1867, and issued toourselvos The throttle orsteamvalve we employ in the induction-pipe -is also like that shown inthe drawing and described in the specification of. the said patent.

This valve is exhibited atS aix-'fixed to'a shaft, R, and arrangedwithin a chest crease, B, above which is the close cylindrical vessel,A,o'f the governor. An arm, C, extends from the junction of thevalve-chest B and the foot of the case A, and serves to support therelay-engine cylinder A', which extends downward therefrom, in' mannerasirepresent'ed. An arm, Q, projects from the valve-shaft R, and is sojointed to the lower end of the piston-rod BA of the cylinder A', as tohe moved up or down thereby, by the VerticalmoVements of the piston-rodB'.. Y l I l Before proceeding further with the explanation of theaddition we have made t'o the governor and the throttle-valve', Wewill'explain in a few' words the governor. v Y

A horizontal shaft, F, supporting' a screw-propeller, G, is, with suchpropeller, arranged within the oase A, in manner as represented, y'.lheshaft F eitends'from the said case through a supporting-partition, H,and

V into another vessel, I, .which is fixed `to the vessel A, andcommunicates therewith through oneA or more holes, a

u, made in the said partition. The shaft is supported in and by thepartition,and inand by a tubular bearing,

.-b, at the end of the cylinder. Furthermore, there is within thepropeller-case,-and fixed to the inner.sur-

face, u serios of ribs, c c c, the oce of which i's well understood.

K is a long gear, fixed on'lthe shaft of the propeller, and engageswith-a short pinion, K2, fixed ou a. drivingshaft, L, arranged in thevessel I, andfso as to project therefroimas represented; An endles belt,from a pulley driven by the main engine, is to transmitrotary motion toa pulley, f.\;ed on and .to the' shaft L. That end of the shaft F whichis within the vessel I, abuts agains't an arm, M, extending down intothe`vessel, and from a shaft, N, arranged transversely'thereof and overthe said vessel. The sliaft Ngoes through a hollow head oiextension. O,raised ou the end opening into said vessel I. An arm, P, extending fromone end of the shaftN, engages, by means of a connecting-rod, T, with anarm, D', fixed on the shaft E' of the 'rotary valve'F' of the smallrelay-engine steam-chest G'.

The valve F is the frusturg of a cone, arranged Within` a correspondingtubular case or seat-tub'e, H', which extends through and is arranged inthe stc'euifohest G', iu manner as represented: v

Within the steam chest G,and arrangeflnbout the ltube H', are twocharnhers,el all.v A pipe, l, to lead steam from the boiler of theengine, opens into the chamber c. -A pipe, f', leading out of thechamber d1, is the steam-eduction pipe. It has a,stopcock,g', arrangedin it. This stop-cock is a useful auxiliary, as, by means of it, we canregulate the escapeof steam from theexhaust of the relay-cylinder, suolibeing a matter of much importance.

The passages leading from Ythe valve-seat or case H' to the two ends ofrthesteam-space of the cylinder A are shown at'al and b1. From each ofth'e passages a'l b1 holes (as shown at h' or are led through the sideof the case H', they being arranged with respect to each other and atequal distances apart therein, in manner as shown in Figure 7, which isan inner side view ofthe part H. There are two other such series, t Z',of holes, leading through the case H', andinto the two chambers cl cil,they being shown in Figures Sand 10, one of which is a top and the othera bottom view of thc part H. They are also shown in Figure 9.

As the v alve F' is to vibrate only in a small arc ofa circle, thepassages through the valve should beprbperly arranged for leading thesteam from the chamber cl alternately into opposite ends of the cylinderA', and soA as to exhaust from each of such ends at the propertime intothe'chamber dl.

The arrangement of these passages is shown on an enlarged scale in iig.9, one being indicated by the black lines, another by the red lines, andthe other two by the yellow and blue lines therein. A

When the propeller is`at the middle of its range of motion, the arm D'should be horizontal, or in such a position as to cause steam to be shutoff from lowage into either end of the relay-cylinder. Should the speedof the propeller be increased,'so as to cause it to advance', the arm D'will be lifted, and thereby cause steam to be let into therelaycylinder, to cause its piston to move in a direction to close moreor less the throttle or main valve, and thus diminish the supply ofsteam to the main engine. On a retreat of the propeller, caused by anyslacking ofthe speed of the main engine, the relay-engine piston will beworked in the opposite direction, so as to cause the main orthrottle-valve to open wider, and let more steam pass to the mainengine-cylinder..

Thusit will be seen-that Athe object of the relay-engine is to supply anadditionalmeans of operating the main valve, and therebykrelieve thegovernor from directly operating such valve, in the mannerein which itdoes, when applied thereto by a connecting-rod leading directly from thearm of the governor to that of the valve. Our addition of therelay-*engine renders the governor and the main valve much moresensitive and certain in their operations. 'l v l The addition of therelay or reinforcing-engineto my governor, and the main valve orthrottle of the induction-pipe,'is to such what the relay-magnet andbattery are tothe main circuit of an electro-magnetic telegraph line,for, by means of the relay-engine or reinforcer, We work the main valve,and thus save the governor the great duty thereof, it being used merelyto work the valve of the relay-engine. The advantage of this willbeieasily seen by persons skilled in steam-engines.

The reverse motion of the valve of the relay-engine is effected by aWeight, W, placed on an arm', K1, extended from the shaft N, in manneras represented. l.

We combine with the said shaft, arm, and weight, a mechanism foreffecting the sudden closing of the throttle or main valve, S, in caseof breakage of the driving-belt of the propeller.

This mechanism may be thus' described. The shaft N has another orshorter arm, L', extended from it, in a direction opposite to that ofthe arm Kl, and to the outer extremity of the arm L' one end of a chain,N', is attached, the other endof such chain being fixed to the weight W.A hole is made laterally through the weight, to allow such Weight toreceive the arm K1 through it, and to slide on such arm lengthwise ofit. There is placed within the weight and its passage a smallspring-latch or bolt, m, whose stem projects through the weight. Thislatch enters one of a series of notches made-,in the upper edge of thearm K1, the same serving to hold the weight at any desirable distancefrom the axis of'the shaft N. p

lThe arm Kl is slotted or forked,'and receives in therslot a slide, n',(see fig. which is a longitudinal section of the arm and its adjacentoperative parts. vThe slide 'n has two slots, o o, made in it obliquely.Pins@ p go through the arm and these slots, and ser'vc to support theslide within the arm. Furthermore, the inner end of the slide n ishinged to a rod,q, which has a spring, 7*, applied to it and in the armK1, the spring operating to move the rod g and the slide endwise. n Acatch-lever, s, arranged. in the arm K1, in manner as shown; andprovided with an operative-spring, t, fixed'to the arm, hooks into anotch, it, of the slider, when the slider is forced back to its rearmostposition, that is to say, so as to bring ashoulder, o, on the slideagainst the end of the catch. A'stud, w, extends down from thelever-catch. n

On a journal, s, projecting from a stationary bracket, y, (shown in g.1,) and encompassing the shaft N, is an adjustable arin, z, which turnsaround as well as slides lengthwise on'the journal, and is xed .theretoby .11, @lamp-screw, a2. This arm has a spring, b2, arranged on it, asshown in iig. 6. Thereis also within the arm .and the spring a bolt, c2,so applied to the arm as to be capable of being moved lengthwisetherein. .A latch, disto enter a groove, e2, in the bolt, serves to holdthebolt in its highest position. When the bolt 1s.1n its lowestposition, a shoulder, f2, of it rests on the bottom of the spring-soclet.

When the bolt is in this latter position, it will be out of reach of the.stud 20, in case the arm K1 should drop on top of the spring b2. When,however, the bolt is in its highest'position, and the driving-beltbreaks, the speed of the propeller will slacken at once or cease tomove, and such propeller, by the weight on the arm, will be forcedbackward. The arm in falling will cause-the stud 'w to descend upon thetop of the bolt c2, and as a consequence the lever-catch s will bedisengaged from vthe slide n. The said slide will nextbe shot forward hvthe rod q and spring r. ln going forward, it will rise and force theweight-catch 'm out of its. notchof the alam K1. The weight will next belaunched off the arm, and in falling will, by means of tue chain N',pull on the auxiliary arm L7 and thereby suddenly yevolvethe shaft N,and bring the valveof the relay or reinforcingengine into a position tocause the piston of such engine to at once eifect the closing of thethrottle or main valve S.

In case the relay or reinforcing-engine is not employed, the moin valveS will be worked directly by the connecting-rod T, being jointed to thearm of the slnift of the said main valve.

The spring b2 serves to prevent stoppage of the engine when the boltv c?is down, and :my large increase of duty is suddenly thrown upon theengine, for1 were it not for the spring, the lever-catch s, during nsudden depression of the arm Kl, would be liable tobe disengaged from beslide n, and .this by the concussion of the` arm K1 on the :Ldjustnblearm .2. The spring prevents .such concussion and its consequences.

We claim the combination of the hydraulic governor' and a. mechanism,substantially ns explained, for effecting the closing of the main valveof the engine, in case of breakage of the driving-belt of vthe governor,such mechanism consisting principally or 'rn substance, not; merely ofthe auxiliary arm L, the catchm, and chain N, but also of the slide ordisengager n, the spring T, lever-catch s, and the arm z,provided'yvitll the bolt c2, or such bolt and the spring b2, the wholebeing applied to the seid arm K1, the governorczrse, and cheweigh W,substantially in manner and so as to operateas specified.A

We also claim the combination of the hydraulic governor and the 'relayor reinforcing-engine applied to the main valve S of the induction-pipeof a. steam-engine, as set forth, with t-he described mechanism foreffecting the closing of the said main valve i-n case of breakage of thedriving-belt of the governor.

JVAUGUSTUS LYNCH, REUBEN K. HUNTOON.

Witnesses:

R. H. EDDY, F. P. HALE,'Jr.

